Drag-saw.



A. R. PUTNAM.

DRAG SAW.

APPLICATION FILED JULY 28. 1914.

Patented J an. 16, 1917.

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fins/CE. I e/IE -A. R. PUTNAM.

DRAG SAW.

APPLICATION HLED JULY 28, 1914.

ALFRED R. PUTNAM, OF VALPARAISO, INDIANA.

DRAG-SAW.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Application filed July 28, 1914. Serial No. 853,621.

To all whom it may concern:

Be it known that I, ALFRED R. PUTNAM, a citizen of the United States ofAmerica, residing at Valparaiso, in the county of Porter and State ofIndiana, have invented certain new and useful Improvements in Drag-Saws,of which the following is a specification.

This invention relates to motor driven drag saws and, more particularly,to a saw 7 of this character intended, primarily, to cut stumps underground, though also adaptable to cutting standing timber, sawing logsand the like.

The objects of the invention are :-to provide a drag saw which maybeoperated to saw beneath the surface of the ground for the purpose ofremoving stumps therefrom; to provide a drag saw which may be readilyattached to or removed froman ordinary traction engine; to provide adrag saw with means for tilting the saw at desired to provide a dragsawv which may be transported from place to place by the engine to whichit is connected without the removal of any part or parts of said saw; toprovide a drag saw of simple and cheap construction which will beefficient and accurate in its operation. 7

With these and such other objects, as may hereinafter more fully appear,my invention consists in the novel arrangement and construction of partsset forth in the following description, more particularly pointed out inthe claims, and which are shown in the accompanying drawings, whereinFigure 1 is a side elevation of the device showing the same in place ona traction engine. Fig. 2 is a plan view of the same. Fig. 3 is a brokenplan view of the skids and saw tilting mechanism. Fig. 41 is a detailsectional view taken on the line 4.--fl of Fig. 2. Fig. 5 is a detailside elevation of the saw carrying head, or bracket. Fig. 6 is detailcross sectional view taken on the line 66 of Fig. 5. Fig. 7 is a detailsectional view taken on the line 7 of Fig. 1.

Referring to said drawings by numerals, upon suitable skids 1, which arejoined together by the braces 2, are mounted circular bearings 3 whichare secured to said skids through their bases 4, by means of bolts,screws, or in any other desired manner. Mounted within said bearings 3is a hollow rectangular casing 5 provided, on its edges at the pointswhere it passes through said v case 5 angles bearings, with the ears, orlugs 6, the outer portion of said lugs being formed in an arc to engagethe inner face of the casing 3.

Bearings 3 are by preference lined with Babbitt metal, and the lugs 6are faced with the same material.

Mounted on the aforesaid braces 2, about midway thereof, is a quadrant 7provided with teeth 8 which are adapted to'be engaged'by a spring catch9 carried by a lever 10 and operated in the usual manner by the handgrip 11 and rod 12. Lever 10 is of substantially Y form and has the endsof its branch arms 13 suitably secured to the ends of a bar 1 1 which ismade fast to the in any suitable manner.

Mounted to reciprocate within casing 5, is a rod 15, one end of which isreduced to form a tongue 16 adapted to enter the bifurcated end of apitman' 17 to which it is 'pivotally connected. Pitman 17 at its opisprovided with a socket for the posite end, reception of a ball 18 formedon the end of a crank 19, which said crank is suitably clamped to aspoke of the fly wheel 20 of the engine. The forward end of rod 15 isbifurcated toreceive a tongue 21 formed on an extension rod 22. tweensaid rods being pivotal, as shown.

An angular saw head 23 is secured, in any suitable manner but,preferably, a horizontally disposed tongue 24 is formed on the end ofextension rod 22 and'is adapted to enter the bifurcated end 25 of thesaw head 23. .The saw head is detachably fastened to extension rod 22,by screws, or in any other suitable manner, so that the same may beeasily removed and the saw secured in place beneath the tongue 24: whenit is desired to. out standing timber or do other work above the surfaceof the ground.

The saw head 23 is angular as shown, to permit the saw to cut below thesurface and has its downwardly, extending portion formed with a curvedface on its front and back, terminanting at one side in the cuttingedges 26 and 27, The, curve of said faces resembles the curve ofaplow.share and the object thereof is to permit said saw head to cut its waythrough the soil as will be hereafter explained. The saw head 23 is Theconnection be- 1 undercut, as indicated at 28 forthe purpose otherwisesuitably fastened to the foremost skid 1, and the other ends boltedtobraces 31 which have one end of each fastened by bolts, or otherwiseto the rear skid 1. The other ends of said braces 31 have pivotalconnection to suitable clamps 32 which are adapted to engage'the frontaxle 33 of the engine 34: and to be clamped in place thereon in anysuitable and well known manner.

The forward end of casing 5 is provided with an upstanding aperturedmember 35 to which is secured one end of a chain or cable 36, the otherend of which is made fast to a shaft 37 journaled in brackets38,suitably fastened to the boiler of the engine 3%. Shaft 37 carries aworm wheel 39 wnich meshes with a worm 40 formed on a shaft a1, which isjournaled in suitable supports formed on the engine and is adapted to beoperated by the hand Wheel 42.

The engine is provided with the usual steering mechanism consisting ofthe shaft 43, hand wheel 44 for revolving said shaft, worm 45 formed onsaid shaft and adapted to engage a worm wheel 46 carried on a shaft 47to which shaft is secured the steering chains 48.

The device is operated as follows: The clamps 32 are placed in positionon the front axle of a traction engine and clamped securely thereon. Thecrank 19 is clamped to one of the spokes of the fly wheel; the end ofchain or cable 36 is fastened to the shaft 37 and, by operating thewheel 42, the chain 36 is wound on the shaft 87 thereby lifting the sawmechanism so that the engine may travel to the place where the sawingoperations are to begin. When sawing a stump the saw head 23 is used.The mechanism is lowered until the skids 1 rest upon the ground. The sawis tilted through the lever 10 until it assumes an angle of aboutfortyfive degrees. The engine is then started Which causes the saw to bereciprocated, the saw head 23 cutting into the ground. Because of theform of head 23, the edge 26 will cut off a slice of earth on theforward stroke and the edge 27 will perform a like operation on thereturn stroke, the incline of the facesadjacent these edges forcing thesaid earth to one side as the saw advances. The advance of the saw isobtained through the steering mechanism of the engine, the front axlebeing swung to correspond to the advance of the saw. In this mannerstumps can be cut to a depth of two feet, or more below the surface,which will insure them being out of the way of a plow. When the stump issawed, the mechanism is raised in the usual manner and the engine mayproceed to the neXt stump. When standing timber or logs are to be.sawed, the head 23 Copies of this patent may be obtained for five centseach, by addressing the is removed andthe saw placed below the tongue24.

Having described my-invention, what I claim as new and desire to secureby Let ters Patent, is

1. In a drag saw, a suitable source of power, a pitman connected to saidsource of power, a suitable support, a rod connected to said pitman andslidably mounted on said support, an angular saw head connected to saidrod, cutting blades formed on the saw head, and a saw connected to thesaw head.

2. In a drag saw, a suitable source of power, a support detachablysecured to said source'of power, a casing revolubly mounted on saidsupport, a rod slidably mounted in said casing, a pitman connecting saidrod to said source of power, an angular saw head connected to said rod,cutting blades formed on said saw head, anda saw connected to said sawhead. i

3. In a drag-saw, a suitable source of power, braces detachablyconnected to said source of power, skids attached to said braces, acasing revolubly mounted on said skids, a rod slidably mounted in saidcasing, a pitman connecting said rod to said source of power, a sawconnected to said rod, and mechanism for revolving said casing torevolve the saw on its longitudinal axis.

4. In a drag-saw, a suitable source of power, driving mechanismconnected to said source of power, skids connected to said drivingmechanism and adapted to support the same upon the ground, a sawconnected. to said driving mechanism, mechanism mounted on said skidsfor revolving the saw on its longitudinal axis, and means for liftingsaid driving mechanism when the same is to be transported.

5. In a drag-saw, a suitable source of power, saw driving mechanismconnected to said source of power, a support for said driving mechanism,a casing mounted on said support, and mechanism for revolving saidcasing to revolve the saw on its longitudinal axis. 7

6. In a drag-saw, a suitable source of power, saw driving mechanismconnected to said source of power, a saw head connected to said drivingmechanism, and means carried by said head for cutting earth on one sideof the head and transferring such cut earth to the opposite side of thehead.

In testimony whereof I hereunto aiiiX my signature in presence of twowitnesses.

P. S. HUBER, M. L. FETT.

Commissioner of Patents,

Washington, D. C.

